Muffler



April 30, 1963 M. KATOGIR 3,087,579 MUFFLER Filed March 2, 1961 32 ,8 my III 34 24 26 I r3 i 32 \W 36' 34 Z4 Z6 26 M H [I I J F J /4 INVENTOR. MOI/A51. Kareem 32 United States Patent Ofice 3,087,579 Patented Apr. 30, 1963 3,087,579 MUFFLER Michael Katogir, 120 /2 Spring NW., Atlanta, Ga. Filed Mar. 2, 1961, Ser. No. 92,805 5 Claims. (Cl. 181-57) This invention relates to mufflers and more particularly to a quiet and effective muffler for internal combustion engines.

It is an object of the present invention to provide a muffler for automobile engines which will effectively reduce the noise of the exhaust gases, and which will readily reduce the pressure of the exhaust gases of the engine.

Still another object of the present invention is to provide a muflier of the above type which can be readily installed in all types of automotive vehicles, and which can be readily serviced or replaced whenever required.

Other objects of the invention are to provide a mufiier bearing the above objects in mind which is of simple construction, has a minimum number of parts, is inexpensive to manufacture and eificient in operation.

For other objects and for a better understanding of the invention, reference may be had to the following detailed description taken in conjunction with the =accompanying drawing, in which:

FIGURE 1 is a longitudinal cross sectional view of a mufiler assembly made in accordance with the present invention; and

FIGURE 2 is a fragmentary cross sectional view taken along line 2-2 of FIGURE 1.

Referring now more in detail to the drawing, a mufiier made in accordance with the present invention, is shown to include a main cylindrical vessel 12 having an end wall 14 at each end with an inlet duct 16 projecting through one end wall and an outlet 36 projecting outwardly through the opposite end wall. The inlet duct 16 may be connected to the exhaust manifold of the internal combustion engine, with the innermost end of the duct 16 having a plurality of apertures 20 through which the gas may exhaust into the interior of the vessel 12, the adjacent end of the duct piece 16 being closed by an end piece 18.

The interior of the main vessel 12 is divided into three separate compartments by a pair of partition walls 30, each having the central flanged aperture 32. Each of the compartments is provided with a fitting 24 upon which a duct 26 is secured at one end. The opposite end of each duct piece '26 extends through the side wall of an auxiliary housing 30' having vents 32, for connectionto individual expansible diaphragms 28. 1

Two of the compartments are provided with .a pair of L-shaped duct members 34 having flared inner ends 35 directly beneath the flanged apertures 32 of the bafiie plates 30 for directing exhaust gases into the respective connecting ducts 26 communicating with the respective diaphragm 28. i

It will now be recognized that in actual use, the exhaust gases are initially introduced to the system through the inlet duct 16. The gases are first allowed to expand within the main vessel 12 and are then directed to the expansible diaphragm 28, which individually will expand to accommodate the pressurized gases, and will intermittently return to their normal collapsed position in response to intermittent reduction in pressure within the main vessel 12 during the discharge of the exhaust gases through the outlet duct 36.

It will thus be recognized that the bellows 28 serve to reduce the kinetic energy of the gases, thus reducing the noise level and gas pressure during final exhaust outwardly through the exhaust duct 36 which can be connected to the tail pipe of the vehicle.

The vents 32 allow for the expansion and contraction of the bellows 28 without resistance as would otherwire result from the build up of pressure within the auxiliary housing vessel 30.

While various changes may be made in the detail construction, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claims.

What I claim as new and desire to protect by Letters Patent of the United States is:

1. A muilier comprising, in combination, a main vessel having an inlet at one end and an outlet at the opposite end, an auxiliary vessel, expansible uni-ts mounted within said auxiliary vessel, partition means having apertures and dividing the interior of said main vessel into a plurality of individual compartments between said inlet and said outlet, individual ducts communicating between each said compartment and the respective one of said expansible units, and vent means in said auxiliary vessel allowing for the expansion and contraction of said expansible units.

2. The combination according to claim 1, wherein said main vessel comprises :a substantially cylindrical enclosure, and said partition means comprise substantially circular baflie plates extending transversely within the interior of said enclosure.

3. The combination according to claim 2, wherein said auxiliary vessel comprises a substantially cylindrical enclosure and wherein said vent means includes a plurality of vents in the side wall of said auxiliary vessel to communicate between the interior of said auxiliary vessel and the atmosphere, certain of said individual ducts which extend between the respective compartments of said main vessel and said respective expansible units within said auxiliary vessels having open inner ends aligned with said apertures for receiving gases as said gases enter their respective compartments.

4. The combination according to claim 3, wherein said expansible units comprise individual bellows mounted for movement between a normally contracted and an expanded position.

5. The combination according to claim 4 wherein said open inner ends flare outwardly toward said apertures and terminate in spaced relationship thereto.

References Cited in the file of this patent UNITED STATES PATENTS 781,939 Fulton Feb. 7, 1905 2,198,021 Wood Apr. 23, 1940 2,329,101 Chipley Sept. 7, 1943 2,829,669 Luzynski Apr. 8, 1958 

1. A MUFFLER COMPRISING, IN COMBINATION, A MAIN VESSEL HAVING AN INLET AT ONE END AND AN OUTLET AT THE OPPOSITE END, AN AUXILIARY VESSEL, EXPANSIBLE UNITS MOUNTED WITHIN SAID AUXILIARY VESSEL, PARTITION MEANS HAVING APERTURES AND DIVIDING THE INTERIOR OF SAID MAIN VESSEL INTO A PLURALITY OF INDIVIDUAL COMPARTMENTS BETWEEN SAID INLET AND SAID OUTLET, INDIVIDUAL DUCTS COMMUNICATING BETWEEN EACH SAID COMPARTMENT AND THE RESPECTIVE ONE OF SAID EXPANSIBLE UNITS, AND VENT MEANS IN SAID AUXILIARY VESSEL ALLOWING FOR THE EXPANSION AND CONTRACTION OF SAID EXPANSIBLE UNITS. 